Sökresultat

The implementation of low-carbon futures requires both the assembling of new technologies, and practices, as well as the ‘unmaking’ of extant high-carbon infrastructures. Here, we bring together geographical, STS, anthropological, and sociological thinking on time to re-conceptualise such processes of unmaking. We argue that a focus on temporalities is especially pertinent to the unmaking of mater

We introduce a new class of bootstrap percolation models where the local rules are of a geometric nature as opposed to simple counts of standard bootstrap percolation. Our geometric bootstrap percolation comes from rigidity theory and convex geometry. We outline two percolation models: a Poisson model and a lattice model. Our Poisson model describes how defects - holes is one of the possible inter

Two major sociopolitical challenges loom over the development of carbon removal. One is mitigation deterrence: that research and deployment of carbon removal could delay mitigation efforts. The other is environmental and climate justice — in particular that carbon removal will be developed in ways that further environmental racism, e.g. for the benefit of interests and groups in the global North w

This paper presents in some detail findings and experiences gained from a new course entitled “Innovation Engineering” (IE). This course is offered in the Technology Management Programme (TM) at Lund University, Lund, Sweden. The incentive for developing the new course was the need for a more integrated and practical approach where technical, customer and application problems from reality confront

This paper presents a theory to quantify the informational value of human acts. We argue that living is functioning against entropy. Acting is presented as a set of decisions and choices to create order that we use as the foundation to develop the concept of complexity of human acts. Frequency theory of probability is then applied to characterize human acts in terms of their degree of freedom and

Popular Abstract in Swedish Dagens samhälle är väldigt beroende av fordon av olika slag. Aldrig förr har människor rest till olika delar av världen, så mycket som idag. Den enorma mängden resors och transporter som sker varje dag är en tung belastning för vår natur. Bilar och lastbilar, som ökar i antal varje dag, släpper ut giftiga avgaser på vägarna och flygplan förbrukar enorma mängder fossilt Urban traffic involves frequent acceleration and deceleration. During deceleration, the energy previously used to accelerate the vehicle is mainly wasted on heat generated by the friction brakes. If this energy that is wasted in traditional internal combustion engines (ICE) could be saved, the fuel economy would improve. Today there are several solutions to meet the demand for better fuel economy

Conference on Remembering Communism: Celebrating 15 years of Democracy, Thessaloniki, June 4-5, 2004 Fifteen Years of Democracy Export in the Balkans: Who Did What to Whom? by Steven Sampson Department of Social Anthropology Lund University Lund, Sweden Contact: Sampson@Get2net.Dk. This paper argues that we must analyze democracy assistance as a specific practice separate from democracy and dem

Aviation is a highly inter-connected system. This means that a problem in one area may cause effects in other countries or parts of the Air Transport System (ATS). Examples range from local air traffic disruptions to the 2010 volcanic ash crisis. Agility, like resilience, refers to the ability to cope with dynamics and complexity in a flexible manner, by adjusting and adapting performance and the

By using arrays of nanowires with intentionally broken symmetry, we were able to detect microwaves up to 110 GHz at room temperature. This is, to the best of our knowledge, the highest speed that has been demonstrated in different types of novel electronic nanostructures to date. Our experiments showed a rather stable detection sensitivity over a broad frequency range from 100 MHz to 110 GHz. The

A tree t-spanner T of a graph G is a spanning tree of G whose max-stretch is t, i.e., the distance between any two vertices in T is at most t times their distance in G. If G has a tree t-spanner but not a tree (t−1)-spanner, then G is said to have max-stretch of t. In this paper, we study the Max-Stretch Reduction Problem: for an unweighted graph G=(V,E), find a set of edges not in E originally wh

Population fluctuations may occur in synchrony among several rodent species at a given site, and they may occur in synchrony over large geographical areas. We summarize information on synchrony in lemmings and voles from the Canadian Arctic for the past 20 years. The most detailed available information is from the central Canadian Arctic, where snap-trap samples have been taken annually at several

The serial Color Word Test, which is a semi-experimental way to differentiate adaptive behavior in stressful situations, was administered at baseline to men participating in the prospective cohort study "Men born in 1914". During follow-up, from 1982-1983 until December 31, 1996, 133 men experienced a myocardial infarction. Four patterns of adaptive behavior in 2 separate dimensions, the Variabili

Liber Daticus Vetustior: A Martyrology from the Twelfth Century The purpose of the article is to explain what a martyrology is and how it was used, to situate Liber Daticus Vetustior (LDV) in the history of martyrologies and to elucidate its sources, character and original function. General accounts about Christian celebration, the cult of saints and the historical development of the martyrology

This comparative study maps and explores planning and designation of official tourism, routes in two countries with quite similar planning traditions, responding to a deficiency in research, on tourism route planning and development. Based on personal semi-structured interviews with, public road planners and managers in Norway and Sweden, the paper illuminates establishment and, management of offi

When several individuals simultaneously provide for offspring, as in families, the effort of any one individual will depend on the efforts of the other family members. This conflict of interest among family members is made more complicated by their relatedness because relatives share genetic interest to some degree. The conflict resolution will also be influenced by the differences in reproductive

Scavenger receptors mediating the uptake of oxidized low-density lipoproteins (oxLDL) by macrophages play a crucial role in foam cell formation during atherosclerosis. One member of this receptor family, the thrombospondin receptor CD36, has recently been shown to mediate a major part of the oxLDL-induced aggravation of atherosclerotic lesions. Here, we show that the expression of CD36 protein and

Kinesin is a microtubule-associated motor protein that transports Alzheimer-associated amyloid precursor protein (APP) in neurons. In animal models, impaired kinesin-mediated APP transport seems to enhance formation of the neurotoxic 42 amino acid fragment of beta-amyloid (A beta 42). In man, one study suggests that a polymorphism (rs8702, 56,836G > C) in the kinesin light chain 1 gene (KNS2) may